Illinois exam glossary
Material defect: a serious condition, not every flaw in a home
A scratched cabinet door and an unsafe electrical panel both have something wrong with them. The important question is what the condition does to the property's value or the occupants' health or safety. Then ask who knew, whether it was reasonably corrected and which disclosure duty applies.
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The short answer
In the Illinois Residential Real Property Disclosure Report, a material defect is a condition that would substantially harm the property's value or significantly impair future occupants' health or safety, unless the seller reasonably believes it has been corrected. The tests are alternatives: a serious safety problem need not also cause a large dollar loss. Material describes significance; latent describes discoverability. A condition can be material even when it is plainly visible.
Reviewed for October 2026 using the Illinois residential disclosure form and the identified seller and licensee provisions. This form-specific definition does not supply every standard used by building codes, contracts or other laws. PSI places disclosure of material facts and defects at national VII.C; the whole Property Disclosures category has 7 of the 100 scored national broker questions. The examples assume a transaction covered by the seller-report Act unless stated otherwise.
Five questions that keep the rules straight
- What is the condition and why does it matter? Identify the observed problem before assigning a cause. Test substantial adverse value effect or significant health or safety impairment. There is no universal repair-price threshold in this definition, and age alone does not prove a material defect.
- Who actually knows? The covered seller must disclose actually known material defects. Section 25 does not require a specific investigation or inquiry to complete the report. Unknown is not a guarantee that nothing is wrong, and the seller's knowledge is not automatically the licensee's knowledge.
- Was it reasonably corrected? The definition and Section 25 recognize a reasonable correction belief. A receipt is evidence of work, not automatic proof that the problem ended. Read the actual form item, known repair results and any recurrence; do not replace one qualification with a blanket rule to hide all history.
- Which duty applies to this person and recipient? The seller's report, a licensee's duties to a client and the seller-licensee duty to a prospective buyer customer are separate. Section 15-25 includes actually known, latent, material, adverse physical facts not discoverable by a reasonably diligent customer inspection. A visible hazard does not become immaterial just because that specific latency element differs.
- What happened after the report? A pre-closing known error, inaccuracy or omission requires a written supplement. Separate the late initial report rule from the supplemental-disclosure rule, then check contract rights and proper delivery. Disclosure does not by itself order a repair, cancel a contract or decide a damages claim.
| Condition in the hypothetical | Significance | Discoverability |
|---|---|---|
| Detached upper-floor railing, plainly visible, significant fall risk | Can be material because of significant safety impairment | Patent on the stated facts |
| Concealed unsafe wiring that reasonable buyer inspection cannot reveal | Can be material because of significant safety impairment | Latent on the stated facts |
| A hidden small cosmetic scratch, no substantial value or health/safety effect | Not a material defect on these facts | May be hidden without being material |
| An old roof with no stated malfunction or adverse effect | Age alone does not establish materiality | More facts are needed |
| A leak reasonably believed corrected, without known recurrence | Apply the definition and correction qualification | Do not decide from the repair invoice alone |
The distinctions that matter
| Distinction | How it works | What to notice |
|---|---|---|
| Material defect and material fact | A material defect is a significant condition under the relevant standard. A material transaction fact can concern matters beyond physical defects. | A school-district representation, title issue or client's transaction information does not automatically fit the residential form's physical-defect analysis. |
| Material and latent | Material concerns significance; latent concerns discoverability. | Do not assume every hidden problem is serious or every visible problem is unimportant. |
| Known and discoverable | Actual knowledge concerns awareness. Discoverability concerns what an inspection could reveal. | An inspection opportunity does not automatically establish that the seller or licensee actually knew every condition. |
| Corrected and covered up | A reasonable belief in correction concerns the underlying condition. Cosmetic concealment may leave the problem in place. | Painting a stain is not the same fact as repairing the water source and knowing the repair worked. |
| Seller report and broker duty | The report is based on the seller's knowledge. A licensee's applicable duties turn on that licensee's knowledge and relationship. | A seller's no answer does not erase a contrary report actually known to the licensee. |
| Supplement and inspection notice | The seller's supplement corrects the statutory disclosure. A buyer's inspection notice exercises applicable contract rights. | Sending one document does not necessarily perform the other party's separate step. |
| Termination and damages | The Act provides distinct termination and liability provisions. The Section 40 termination right ends after conveyance. | Ending that termination right does not itself erase every possible damages or contract remedy. |
Work through the facts
A minor cosmetic flaw
A cabinet has a small scratch. Assume it has no substantial adverse value effect and no significant health or safety effect.
- A deficiency can exist without meeting the statutory significance threshold.
- The supplied facts rule out both alternatives.
Answer: It is not a material defect under the form definition on these facts. Do not infer that every cosmetic condition is always harmless.
A low-cost repair with a serious hazard
An accessible outlet has exposed live conductors that create a significant shock risk. The estimated repair is inexpensive, and the seller actually knows the condition.
- The definition includes significant health or safety impairment.
- A low repair price does not remove that alternative.
Answer: The stipulated significant safety condition can be material. Its visibility is a separate issue; no minimum repair-dollar amount is required by this definition.
A visible structural problem
An engineer identifies a visibly failing support with significant structural safety implications. A reasonably diligent buyer inspection would reveal it.
- The significance supports materiality.
- The stated discoverability makes it patent rather than latent.
Answer: Do not mark it immaterial merely because it is visible. Apply each person's actual duty rather than assuming the seller-report rule requires latency.
A reasonable repair belief and a new recurrence
A roof leak was repaired, later storms showed no leakage and the seller reasonably believed it corrected. Before closing, the same area begins leaking again, making the earlier report inaccurate.
- The earlier correction belief is assessed on what the seller actually knew then.
- The new pre-closing knowledge changes the present disclosure analysis.
Answer: Section 30 requires a written supplement for the now-known inaccuracy. The prior repair receipt is not permission to ignore recurrence.
A label does not fix the water source
The seller knows the basement repeatedly floods, paints the stains and reports no known flooding or recurring leakage problem. Assume the source remains uncorrected.
- Appearance changed; the known water condition did not.
- The facts do not supply a reasonable correction belief.
Answer: The seller cannot use the paint job as the stated correction exception. The report must address the known facts truthfully.
The agent knows something different
The seller reports no known electrical defect. The seller's licensee has actually received a reliable report identifying a concealed material adverse electrical condition that a reasonably diligent buyer customer inspection could not discover.
- The licensee's knowledge is supplied independently.
- Every stated Section 15-25 disclosure element is met.
Answer: The seller's no answer does not excuse the licensee's timely disclosure to the prospective buyer customer. The licensee should describe the known information accurately rather than invent an engineering diagnosis.
The late initial report
In violation of Section 20, the initial report arrives after all parties signed and discloses a material basement defect. The buyer receives it before conveyance.
- Section 40(a) addresses this late-report situation.
- Its five-business-day period runs after receipt of that report.
Answer: The buyer may use the specified termination right within that period, with the statutory return of earnest money or down payments, using the required written notice. Do not substitute the supplement rule.
A genuinely new, repairable defect in a supplement
The seller did not previously know a material plumbing defect. It is discovered and disclosed by written supplement before closing, is repairable before closing, and the seller agrees in writing within five business days after delivery to repair it. Assume no other Section 40(b) ground.
- The hypothetical rules out prior actual knowledge of the report error and inability to repair before closing.
- The seller timely supplies the written repair agreement for the remaining ground.
Answer: The stated supplement alone does not provide a Section 40(b) termination ground. Separate contract rights and performance of the promised repair remain relevant.
A verbal repair promise is not the specified agreement
A supplement discloses a material defect repairable before closing. The seller verbally promises repair, but within the five-business-day period declines or otherwise fails to agree in writing.
- Section 40(b)(iii) expressly addresses agreement in writing.
- A verbal assurance does not satisfy that stated condition.
Answer: The specified ground for the supplemental termination right is present. Apply the Act's written-notice requirements before conveyance rather than assuming an automatic cancellation.
The defect is found after conveyance
After title has been conveyed, the buyer discovers evidence that the seller knowingly gave a false report answer.
- Section 40(c) ends that statutory termination right after conveyance.
- Section 55 addresses knowing violations and actual damages; Section 60 has a separate time limit.
Answer: Do not describe the remedy as automatic statutory cancellation after closing, or say every possible claim disappeared. Liability, proof, timing and any other cause of action require separate analysis.
Mistakes to avoid
- A defect must affect both value and safety. The form definition uses alternatives: substantial adverse value effect or significant health or safety impairment.
- A repair estimate determines materiality by itself. The definition supplies no universal repair-dollar threshold. Use the actual consequences.
- A visible problem does not need truthful disclosure. Visibility and materiality are separate. Do not misstate a known fact while analyzing a particular latent-defect duty.
- A repair invoice permanently excuses any later answer. Evaluate reasonable belief, the exact form item and later knowledge or recurrence.
- Every supplement gives the buyer a new five-day cancellation window. Section 40(b) states particular grounds. Its repair-agreement period is not a universal buyer election deadline.
- The seller report is a warranty or inspection. It is neither. Unknown does not establish defect-free condition.
Check your understanding
These are original teaching questions, not recalled or predicted PSI questions. Answer first, then explain why the other choices fail.
1. Which best states the Illinois residential form's material-defect test?
- Any condition the buyer dislikes
- A condition that must impair value, health and safety simultaneously
- Only a concealed problem costing more than $10,000
- A substantial adverse value effect or significant health or safety impairment, subject to reasonable correction belief
Show answer and explanation
Answer: D. A substantial adverse value effect or significant health or safety impairment, subject to reasonable correction belief
The alternatives do not require all three consequences, a fixed repair amount or concealment. The reasonable-correction qualification is part of the form's definition.
2. An inexpensive repair is needed to remove a stipulated significant electrical shock hazard. What is the sound conclusion?
- The significant safety consequence can satisfy the test despite the low repair price
- It becomes material only if nobody can see it
- It cannot be material because the repair is cheap
- It is material only after an injury occurs
Show answer and explanation
Answer: A. The significant safety consequence can satisfy the test despite the low repair price
Materiality does not use a universal dollar cutoff. Significant future-occupant safety impairment is an alternative to substantial adverse value effect.
3. A plainly visible support is materially unsafe and discoverable through reasonably diligent buyer inspection. How should it be classified?
- Material and patent on the stated facts
- Latent and necessarily immaterial
- Automatically safe because it is visible
- Neither material nor patent because an engineer saw it
Show answer and explanation
Answer: A. Material and patent on the stated facts
The condition's significance and discoverability are independent. Do not force latency into the seller-report materiality definition.
4. Which knowledge and investigation statement follows Section 25?
- A seller guarantees discovery of all defects
- The seller discloses actually known material defects without a specific statutory investigation duty to complete the report
- A seller may deny a known defect if no buyer asks
- The seller must commission every specialist test before answering
Show answer and explanation
Answer: B. The seller discloses actually known material defects without a specific statutory investigation duty to complete the report
Actual knowledge governs the stated duty, and the Act does not require a specific investigation or inquiry for completion. That limitation does not authorize false known facts or guarantee that unknown defects do not exist.
5. A seller reasonably believed a leak repaired. Before closing, known recurrence makes the delivered report inaccurate. What follows?
- A written supplement is required under Section 30
- The old invoice cancels every update duty
- No update is required if repair is inconvenient
- Only an oral remark at closing can be used
Show answer and explanation
Answer: A. A written supplement is required under Section 30
The seller now knows the prior report is inaccurate. Section 30 requires written supplemental disclosure before closing through a Section 50 delivery method.
6. The seller's licensee actually knows a latent material adverse physical fact that a reasonably diligent buyer customer inspection cannot discover. The seller says not to mention it. Which is correct?
- Section 15-25 requires the seller's licensee to disclose it timely to the prospective buyer customer
- The seller's report controls the licensee's independent knowledge
- Only the buyer's own agent can disclose it
- Client permission is required before any compliance
Show answer and explanation
Answer: A. Section 15-25 requires the seller's licensee to disclose it timely to the prospective buyer customer
The scenario supplies the statutory elements. A client instruction does not remove the licensee's duty, and material physical-condition information is excluded from the Act's confidential-information definition.
7. A qualifying late initial report first discloses a material defect after everyone signed, in violation of Section 20. When does Section 40(a) measure its five-business-day period?
- After any future repair estimate
- After the seller first learns the defect
- After the buyer receives that report
- After possession, regardless of conveyance
Show answer and explanation
Answer: C. After the buyer receives that report
The selected late initial report right is measured after receipt. Apply the written notice and pre-conveyance requirements; do not confuse it with the seller's supplement repair-agreement period.
8. A supplement reveals a genuinely new defect that is repairable before closing. The seller timely agrees in writing to repair. No other Section 40(b) ground exists. What is correct?
- Any supplement automatically cancels the contract
- A supplement always grants an unconditional five-day buyer exit
- The buyer has waived every inspection and contract right
- The stated supplement alone does not establish a Section 40(b) termination ground; separate contract rights still matter
Show answer and explanation
Answer: D. The stated supplement alone does not establish a Section 40(b) termination ground; separate contract rights still matter
The question expressly rules out prior actual knowledge of the disclosure error, inability to repair and failure to make the specified written repair agreement. That does not decide other rights or whether repair is later performed.
9. For the repairable-defect ground in Section 40(b)(iii), which fact matters?
- The seller declines or fails to agree in writing to repair within five business days after supplemental delivery
- The buyer merely prefers a different paint color
- The seller makes only an undated verbal assurance after conveyance
- The seller changes the listing photograph
Show answer and explanation
Answer: A. The seller declines or fails to agree in writing to repair within five business days after supplemental delivery
The provision uses the seller's written agreement within its stated period. It is not a universal five-day buyer cancellation window for every supplement.
10. Which statement about disclosure and repair is correct?
- Disclosure and repair obligations are different; the Act and contract must be analyzed separately
- An as-is label permits a knowingly false report
- A no answer guarantees that no defect exists
- A disclosed defect always requires the seller to repair it free
Show answer and explanation
Answer: A. Disclosure and repair obligations are different; the Act and contract must be analyzed separately
The statutory form permits an as-is bargain but is not a warranty or inspection substitute. It does not authorize known false information or erase applicable supplement and licensee duties.
11. After conveyance, which distinction is correct?
- Section 40's termination right has ended, while a timely supported damages or other claim requires separate analysis
- Every possible cause of action automatically disappears
- The purchase contract is automatically rescinded upon any later discovery
- The seller owes every estimated repair amount without proof
Show answer and explanation
Answer: A. Section 40's termination right has ended, while a timely supported damages or other claim requires separate analysis
Section 40(c) ends that termination right, while Sections 55 and 60 separately address liability and timing. The Act also preserves relevant other-law and contract remedies; no outcome is guaranteed.
12. Which Section 55 attorney-fee statement is accurate?
- Fees are always automatically doubled
- The statute prohibits any fee award
- Every defect, known or unknown, guarantees the buyer's fees
- The court may award reasonable attorney fees to the prevailing party under the stated provision
Show answer and explanation
Answer: D. The court may award reasonable attorney fees to the prevailing party under the stated provision
The statute makes a fee award discretionary. Its knowing-violation and actual-damages requirements must not be replaced with automatic liability merely because a condition exists.
13. For the Section 60 triggering event, assume possession begins May 4, 2026, occupancy May 15 and recording June 1. Which event does the statutory earliest-event language select?
- The June 1 recording because it is last
- The day a defect is later discovered
- The May 4 possession
- The May 15 occupancy even though possession began earlier
Show answer and explanation
Answer: C. The May 4 possession
Section 60 uses the earliest of possession, occupancy or recording, not the last event or discovery. The question identifies the statutory starting event; it does not decide extensions, a private filing deadline or a different cause of action.
Common questions
What makes a defect material in Illinois?
For the residential disclosure form, the condition must substantially adversely affect value or significantly impair future occupants' health or safety, subject to reasonable belief in correction. Either consequence can satisfy the definition. Use the actual facts, rather than assuming age, appearance or a repair estimate settles it.
Is there a minimum repair cost?
No universal dollar cutoff appears in this definition. A relatively inexpensive correction can address a significant safety hazard. Conversely, an expensive elective upgrade is not necessarily correction of a material defect. A repair cost can be evidence without being the only test.
Can a visible problem be material?
Yes. A visible condition can be seriously unsafe or substantially affect value. Latent and material describe different things. The specific seller-licensee customer duty in Section 15-25 includes latency and reasonable discoverability; do not import that element into every other disclosure duty.
What if the seller did not know?
Section 25 requires disclosure of actually known material defects and does not require a specific investigation to complete the report. Its liability protections depend on the stated facts, including knowledge of an error. A later defect does not by itself prove earlier knowledge, but records and communications can provide relevant evidence. The report does not guarantee that an unknown problem does not exist.
Does a repaired problem still have to be reported?
The definition, Section 25 and the form's current-condition note recognize a reasonable belief that a condition has been corrected. Evaluate the actual knowledge and exact statement. An invoice alone is not conclusive; recurrence or contrary findings can change the analysis. Do not turn this qualification into a universal answer to every form item or other disclosure law.
Does the report ask about anything beyond current physical defects?
Yes. Answer the statements as written. For example, item 23 concerns a received violation notice where the violation has not been corrected; it is not every historical notice regardless of correction. Item 24 separately asks about known past methamphetamine manufacture. The form's wording and qualifications matter, and the report is not simply a list of 24 identical physical-defect questions.
Can an as-is seller conceal a known material defect?
An as-is bargain does not authorize a false report or concealment. The form recognizes as-is transactions while explaining that the disclosure is not an inspection or warranty. The seller's applicable statutory duties, the licensee's duties, contract terms and other law remain separate questions.
Does the listing agent simply repeat the seller's answers?
No. Section 15-25 requires honest treatment of customers and prohibits negligently or knowingly false information. Its separate physical-condition duty applies when the seller's licensee actually knows the specified latent material adverse facts that reasonably diligent customer inspection could not discover. Contrary actual knowledge cannot be erased by copying the seller's form.
What does the agent owe a represented buyer?
Section 15-15 includes timely disclosure of actually known material transaction facts to the client and reasonable skill and care. That client duty is not limited to the wording of the seller-licensee customer physical-condition sentence. A licensee should communicate known facts accurately and recognize the limits of the licensee's expertise.
When is a written supplement needed?
Under Section 30, when before closing the seller becomes aware of an error, inaccuracy or omission in a previously delivered report or supplement, the seller must deliver a written supplement through a Section 50 method. A genuinely new problem can make an earlier answer inaccurate even if it was truthful when originally made.
Does every supplement give five days to cancel?
No. Section 40(b) identifies three grounds: prior actual knowledge of the report error, inability to repair the material defect before closing, or a repairable defect for which the seller declines or fails to agree in writing to repair within five business days after supplemental delivery. That last period concerns the seller's written agreement. It is not an unconditional new five-day buyer election for every supplement. The Section 40 right also requires the specified written termination before conveyance; disclosure does not itself cancel the contract.
How is a late initial report different?
Section 20 requires the report before contract signing. For the qualifying material-defect report delivered after all parties signed in violation of that requirement, Section 40(a) gives the buyer five business days after receipt to terminate with return of earnest money or down payments under that provision. Section 40(c) requires written termination delivered as specified and ends the right after conveyance. Contract rights and Section 55 are separately preserved. The statute includes specified yes responses but excepts items 1 and 2; a yes about occupancy or flood insurance alone is not the stated material-defect trigger.
Can the seller be liable without an automatic repair obligation?
Yes. Disclosure and repair are different questions. Section 55 addresses knowing violations or knowingly false report information, actual damages and court costs; the court may award reasonable attorney fees to the prevailing party. The existence of a defect alone does not establish every liability element or an automatic award of the entire repair estimate.
How long can a buyer wait to sue under this Act?
Section 60 bars commencement of an action for a violation of this Act later than one year from the earliest of possession, occupancy or recording of the conveyance instrument. It does not say one year after discovery or after whichever event occurred last. Other claims can involve different rules, and a private deadline needs its own legal analysis.
Is signing the report an inspection or warranty?
No. The form says the disclosures are not warranties and are not a substitute for inspections or warranties the parties may obtain or negotiate. A seller's lack of awareness does not prove the absence of defects. Distinguish the condition, known information and scope of any professional inspection.
Are these actual PSI questions or a readiness score?
No. They are original exercises on the definition and selected Illinois rules. The entire Property Disclosures category accounts for 7 scored national broker questions, not a separate material-defect quota. A small question set does not validate readiness; review the reason for a missed answer and try a fresh mixed set.
Keep practising
Your next practice step
Put property disclosure into practice
Identify the person, property, knowledge and timing that trigger the duty.
These web resources are free. The app has a separate free starter tier and optional paid full access.
Official sources and scope
The residential form supplies the definition, awareness standard and correction qualification. Sections 20, 25, 30 and 40 distinguish the initial report, later knowledge and different termination procedures. Sections 45, 55 and 60 address other law, liability and the Act-specific time limit. Licensee duties apply separately to the actual relationship and knowledge. The statutory form and selected provisions are linked here; this page is not a completed disclosure report. PSI supplies the outline placement. Examples and questions are original.
- 225 ILCS 454/1-10: client, customer and confidential information
- 225 ILCS 454/15-15: client duties
- 225 ILCS 454/15-25: the specific seller-licensee customer duty
- 765 ILCS 77/15: nine seller-transfer exemptions
- 765 ILCS 77/20: complete report before contract signing
- 765 ILCS 77/25: actual knowledge and qualified seller protection
- 765 ILCS 77/30: written preclosing supplement
- 765 ILCS 77/35: current report, definitions and 24 statements
- 765 ILCS 77/40: initial report and supplemental defect remedies
- 765 ILCS 77/45: other law and remedies preserved
- PSI June 24, 2026: national VI.B and VII.A/C duties and disclosures
- 765 ILCS77/55: violations, damages and discretionary attorney fees
- 765 ILCS77/60: time limit for an Act violation
This is exam preparation, not advice for a specific transaction. State law and the applicable facts control. Our editorial and corrections process explains how to report an issue.